Connecting the breakout box and checking the ground terminals: Verification

Fig 1: Identifying Ignition OFF

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Fig 2: Disconnecting Control Unit

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• Ignition off
• Main unit / audio control module disconnected.
• Switch off all equipment that takes power from the battery (courtesy lighting, radio etc).

  Connect an ohmmeter between terminal #26 on the breakout box and the battery negative terminal.

  Fig 3: Identifying Ohm Meter

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The ohmmeter should read 0 Ω. 

• YES 

  OKAY:  Troubleshooting has been completed.

• NO 

  Refer to Fault-tracing information